GNU bug report logs - #68559
[PATCH] Improve Python shell completion

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From: Liu Hui <liuhui1610 <at> gmail.com>
To: kobarity <kobarity <at> gmail.com>
Cc: Mattias Engdegård <mattias.engdegard <at> gmail.com>, Eli Zaretskii <eliz <at> gnu.org>, 68559 <at> debbugs.gnu.org
Subject: bug#68559: [PATCH] Improve Python shell completion
Date: Mon, 26 Feb 2024 19:06:42 +0800

[Message part 1 (text/plain, inline)]

On Fri, Feb 23, 2024 at 10:39 PM kobarity <kobarity <at> gmail.com> wrote:
>
> Hi Liu,
>
> I noticed that with Non-native completions, Jedi completion is not
> enabled even if PYTHONSTARTUP is set and "REPL completion using Jedi
> 0.18.2" is shown in inferior Python. Is this expected behavior?  Jedi
> completion is enabled regardless of PYTHONSTARTUP setting when I use
> IPython with Non-native completions.

Thanks for pointing out the problem! The attached patch should enable
Jedi completion for the non-native case.

On Fri, Feb 16, 2024 at 3:41 PM Eli Zaretskii <eliz <at> gnu.org> wrote:

> > The Python shell completion relies on the readline module, which is
> > not available for Python on MS-Windows. According to the instruction
> > in python.el:
> >
> > ;; readline based shell (it's known to work with PyPy).  If your
> > ;; Python installation lacks readline (like CPython for Windows),
> > ;; installing pyreadline (URL `https://ipython.org/pyreadline.html')
> > ;; should suffice.  To troubleshoot why you are not getting any
> > ;; completions, you can try the following in your Python shell:
> >
> > ;; >>> import readline, rlcompleter
> >
> > ;; If you see an error, then you need to either install pyreadline or
> > ;; setup custom code that avoids that dependency.
>
> I don't know if I have CPython, but the above does show an error
> message.
>
> > It may be necessary to install pyreadline (for Python 2.7) or
> > pyreadline3 (for Python 3).
>
> I will see if I can do that, thanks.
>
> Regardless, patches to the test suite to skip the tests which rely on
> those modules, if they aren't installed, will be welcome.

Such tests should be skipped now with this patch.

[0001-Detect-the-readline-support-for-Python-shell-complet.patch (text/x-patch, attachment)]

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